We’ve probably all been in shops where a little bell tied to the door chimes to announce someone is coming in. How would you like something similar, but more musical, to announce a door opening – maybe strumming a guitar? Place a Guitdoorbell over a door, and the swinging of the door will move a mounted plectrum across the strings of a guitar for a musical announcement. While the plectrum is permanently mounted, you can easily remove the guitar from the mounting board so you can play it. The Guitdoorbell is suitable for use in your home, business, or a restaurant. It’s available at the Guitdoorbell website for $149, with your choice of a natural or black guitar.